Apparatus for producing treating baths for textiles



Dec. 19, 1967 c. TISCHBEEN 3,358,706

APPARATUS FOR PRODUCING TREATING BATHS FOR TEXTILES Filed Aug. 17, 19662 Sheets-Sheet 1 Q& 2 mg 'INVENTOB C, Tes chbem ATTORNEYS Dec. 19, 1967c. TISCHBEIN 3,358,706

APPARATUS FOR PRODUCING TREATING BATHS FOR TEXTILES Filed Aug. 17, 19662 Sheets-Sheet 2 FIG. 2.

' INVENTOR C. TLs ch be in ATTORNEYS United States Patent gREATIN GBATHS ABSTRACT OF THE DISCLOSURE A bath for treating textiles isprovided by means of an apparatus having a container for the bath andseparate supply containers for the bath components. The supplycontainers being connected with the bath by magnetic throttle valves andhaving level indicators provided with float valves.

This invention relates to an apparatus for producing treating baths fortextiles and refers more particularly to an apparatus for producingtreating baths which are made up of different components. The inventionis especially concerned with an apparatus producing baths composed ofdilferent separate components which easily decompose when mixed, themixing of such components taking place shortly before the bath istransmitted to the device applying it to the textiles.

By way of example, it is known that during the bleaching of textiles thealkali with the stabilizer and the peroxide which treat the textilesdecompose within a short time, particularly in case of highconcentrations, and thus lose a great deal of their efiectiveness.However, foularding means with high concentrations are often used inmany modern impregnating processes, such as so-calledaddition-impregnation. The quick decomposition and the small amountsused often make it necessary to add a new solution. This application ofnew solutions takes place as a charge in a container which is filled byhand with the separate components until the correct proportions havebeen provided. Immediately thereafter the solution is poured into areserve container belonging to the impregnation unit and from there itis supplied in the required amounts by a dosing pump to the impregnatingapparatus. In order to diminish the danger of decomposition during thestorage periods the reserve container is usually made comparativelysmall, and this makes it necessary for the operators to often providefresh solutions. It is apparent that the present procedure isinconvenient and time consuming and is liable to cause errors on thepart of the operators.

An object of the present invention is to eliminate these prior artdrawbacks.

Another object is to provide an extensive automatisation of bathproduction and to make readily available fresh baths of the desiredconsistency.

Other objects will become apparent in the course of the followingspecification.

In the accomplishment of the objectives of the present invention it wasfound desirable to provide several separate reserve containers for theindividual components of the bath and to connect them with a reservecontainer for the ready bath by throttle valves, magnetic valves,discharging funnels or mixing funnels and conduits, whereby the magneticvalves are actuated by a float switch connected to the reserve containerfor the ready bath.

In accordance with one simplified embodiment of the present inventionlevel containers with float valves can be provided between the supplycontainers and the throttle valves in front of discharging funnelsdirected to the main reserve container; a swinging outflow conduit canbe so arranged that a specific component of the mixture can be directedat will either into one of the funnels or into a measuring container, sothat the ratio of the individual components of the solution can bealways controlled.

According to a further improved embodiment of the present invention eachreserve container for a specific component of the bath can be providedwith a separate transmitting pump, preferably a displacement pump,whereby a bath component can be directed by a pump either back into thecontainer through a volume measuring device, or into a mixing funnel. Inorder to avoid the possibility that the pump would be transmitting whilethe flow is closed, valves can be provided between the pressure conduitsof the pumps and the mixing funnel. By means of these valves a certainamount of each liquid can be always returned into its container, so thatno inadmissible rises in pressure can take place.

It is apparent that the production of baths from different components inaccordance with the present invention is not limited to bleaching bathsbut can be also applied to all other chemical processes.

The invention will appear more clearly from the following detaileddescription when taken in connection with the accompanying drawingsshowing by way of example, preferred embodiments of the inventive idea.

In the drawings:

FIGURE 1 is a diagram illustrating a unit wherein the basic adjustmentof the separate amounts of the components takes place prior to theoperational use of the bath.

FIGURE 2 is a diagram illustrating an improved unit which makes itpossible to control the amounts of the separate components during theoperational use as well.

Similar parts designated by the same" numerals throughout the drawings.

The drawings show by way of example devices used for producing arewashing solution containing two com ponents, namely, an alkali with astabilizer and peroxide. When these components are separated, they canbe preserved for any desired lengthy time periods. However, when theyare mixed in the necessary proportions to form a treating solution anoticeable decomposition takes place after a short time even at roomtemperature. Consequently, only small amounts of the prepared solutionare kept in the supply container 16 (FIGS. 1 and 2). The automaticpreparation of the treating solution takes place in the followingmanner:

The apparatus shown in FIG. 1 has two supply con tainers 10. Eachcontainer 10 communicates with a funnel-shaped level container 18containing a float valve 19 whichalways provides the same initialpressure in front of a throttle valve 11 connected with the container18, the pressure being independent from the amount of liquid in thecontainer 10. Each valve 11 is connected with a magnetic valve 12. Themagnetic valves 12 are connected with a time contact switch 26 which canbe set to a selected contact time.

In operation, one container 10 may be filled with NaOH while the othercontainer 10 may be filled with peroxide. The liquids flow into thefunnel-shaped levelindicating containers 18 having float valves 19. Thethrottle valves 11 and the magnetic valves 12 provide that dependingupon the position of the throttle valves and the set contact time,predetermined amounts of liquids flow into the measuring containers 21through the swingable outlets 20.

The throttle valve 11 for the peroxide is so set depending upon thedesired mixing ratio of the two components that during the time periodset by the time contact switch the amount of. the outflowing peroxidewill be either a fraction or a multiple of the outflowing NaCI-l amount.The total amounts of the two components must jointly be always greaterthanthe maxim-um amount transmitted by the dosing pump 27. Aftercompletion of the desired ratio and amount settings of the throttlevalves the swingable outlets 2d are swung away from the measuringcontainers 21 and moved over the outlet funnels 13, the two magneticvalves 12 being switched to the float switch 17 in the container 16.Then the two component liquids leaving the containers 13 and flowingthrough the conduit 15 will be mixed in the container 16 for the pump 27and their flow will continue until the container 16 is filled, whereuponthe float valve 17 will simultaneously switch off the magnetic valves12, thereby closing the valves 11 and interrupting the flow. The pump 27will transmit the mixed liquid to the impregnating apparatus. Thisprocedure can be repeated as long as it is necessary.

FIG. 2 shows a mixture preparing apparatus which is further improved inthat it makes possible the control of the amounts of the separatecomponents being mixed during operation as well. The apparatus includesthe supply containers for the two components. Pumps 22 transmit the twoliquids the amounts of which have been determined by throttle valves 11,through measuring screens 23 and three-way magnetic valves 12 eitherinto a mixing container 14 or back into the separate containers 10. Themeasuring devices 23 are connected with flow meters 24 which indicatethe flowing amounts of the liquids and thus provide a control; when theflows are below a minimum amount or above a maximum amount they actuateoptical and/or acoustic warning signals (not shown).

The mixed liquids flow from the container 14 into the container 16. Whenthe supply container is empty the float switch 17 supplies current tothe magnetic valves 12 whereupon the two pumps 22 will supplypredetermined amounts of the two liquids to the mixing container .14from which the mixture will flow into the supply container 16. When thecontainer '16 is full the float valve 17 is switched off and themagnetic valves 12' return to the initial position. The mixture ispumped into the impregnating apparatus in the usual manner.

It is apparent that the examples described above have been given solelyby way of illustration and not by way of limitation and that they arecapable of many variations and modifications within the scope of thepresent invention. All such variations and modifications are to beincluded within the scope of the present invention.

What is claimed is:

1. In an apparatus for producing a treating bath having a plurality ofcomponents, a separate supply container ,for each component, said supplycontainers having outlets, throttle valves, means connecting saidthrottle valves with said outlets, magnetic valve means connected withsaid throttle valves, a bath-receiving container, a float valve in saidbath-receiving container, means connecting said magnetic valve meanswith said float valve, and means connected with said magnetic valvemeans for supplying said components to said bath-receiving container,wherein the first-mentioned means comprise funnel-shapedlevel-indicating containers communicating with the out-lets of saidsupply containers and having outlets communicating with said throttlevalves, and a separate float valve in each funnel-shapedlevel-indicating container.

2. An apparatus in accordance with claim 1, wherein the last-mentionedmeans comprise a conduit leading to said bath-receiving container and aseparate tunnel for each component, said funnels communicating with saidconduit, and outlet conduits connected with said magnetic valve meansand leading to said tunnels for transmitting said components to saidfunnels.

3. An apparatus in accordance with claim 2, further comprising aseparate measuring container located close to each funnel, each of saidoutlet conduits being swingable between a measuring container and atunnel to transmit a bath component either to a funnel or to a measuringcontainer.

4. An apparatus in accordance with claim 1, wherein the last-mentionedmeans comprise a mixing container, means supplying said components tosaid mixing container, and means supplying the mixed bath from saidmixing container to said bath-receiving container.

5. An apparatus in accordance with claim 4, wherein the first-mentionedmeans comprise pumps communicating with the outlets of said supplycontainers and said throttle valves and wherein the means supplying saidcomponents to said mixing container include measuring devices and branchconduits transmitting said components either to said mixing container orback to their supply containers.

6. An apparatus for treating textiles with a bath having a plurality ofcomponents, said apparatus comprising at least two supply containersadapted to be filled with different liquid components and havingoutlets, two throttle valves, means connecting each throttle valve withthe outlet of a separate container, a separate magnetic valveoperatively connected with and actuating each throttle valve, abath-receiving container, a float valve in said bath-receivingcontainer, means operatively connecting said float valve with saidmagnetic valves, and means connected with said magnetic valves forsupplying said components to said bath-receiving container.

References Cited FOREIGN PATENTS 51,780 1/1918 Sweden. 623,104 12/1935Germany. 989,148 2/ 1944 France.

M. CARRY NELSON, Primary Examiner.

M. I. MILLER, Assistant Examiner.

1. IN AN APPARATUS FOR PRODUCING A TREATING BATH HAVING A PLURALITY OFCOMPONENTS, A SEPARATE SUPPLY CONTAINER FOR EACH COMPONENT, SAID SUPPLYCONTAINERS HAVING OUT LETS, THROTTLE VALVES, MEANS CONNECTING SAIDTHROTTLE VALVES WITH SAID OUTLETS, MAGNETIC VALVE MEANS CONNECTED WITHSAID THROTTLE VALVES, A BATH-RECEIVING CONTAINER, A FLOAT VALVE IN SAIDBATH-RECEIVING CONTAINER, MEANS CONNECTING SAID MAGNETIC VALVE MEANSWITH SAID FLOAT VALVE, AND MEANS CONNECTED WITH SAID MAGNETIC VALVEMEANS FOR SUPPLYING SAID COMPONENTS TO SAID BATH-RECEIVING CONTAINER,WHEREIN THE FIRST-MENTIONED MEANS COMPRISE FUNNEL-SHAPEDLEVEL-INDICATING CONTAINER COMMUNICATING WITH THE OUTLETS OF SAID SUPPLYCONTAINERS AND HAVING OUTLETS COMMUNICATING WITH SAID THROTTLE VALVES,AND A SEPARATE FLOAT VALVE IN EACH FUNNEL-SHAPED LEVEL-INDICATINGCONTAINER.